Index: Riskeer/Common/src/Riskeer.Common.Forms/Helpers/AssemblyGroupColorHelper.cs
===================================================================
diff -u -r1228f310314708afee087d4e83260e80d83f18e5 -rd1ae209d3953a6aeba1fc00bb00d0da56f9559fe
--- Riskeer/Common/src/Riskeer.Common.Forms/Helpers/AssemblyGroupColorHelper.cs	(.../AssemblyGroupColorHelper.cs)	(revision 1228f310314708afee087d4e83260e80d83f18e5)
+++ Riskeer/Common/src/Riskeer.Common.Forms/Helpers/AssemblyGroupColorHelper.cs	(.../AssemblyGroupColorHelper.cs)	(revision d1ae209d3953a6aeba1fc00bb00d0da56f9559fe)
@@ -29,7 +29,7 @@
     /// <summary>
     /// Helper class for determining the colors belonging to various assembly groups.
     /// </summary>
-    public class AssemblyGroupColorHelper
+    public static class AssemblyGroupColorHelper
     {
         /// <summary>
         /// Gets the color for a failure mechanism section assembly group.
Index: Riskeer/Common/src/Riskeer.Common.Forms/Helpers/FailureMechanismSectionResultRowHelper.cs
===================================================================
diff -u -r05e4083fd925194daf36dea89901f7be69318cf9 -rd1ae209d3953a6aeba1fc00bb00d0da56f9559fe
--- Riskeer/Common/src/Riskeer.Common.Forms/Helpers/FailureMechanismSectionResultRowHelper.cs	(.../FailureMechanismSectionResultRowHelper.cs)	(revision 05e4083fd925194daf36dea89901f7be69318cf9)
+++ Riskeer/Common/src/Riskeer.Common.Forms/Helpers/FailureMechanismSectionResultRowHelper.cs	(.../FailureMechanismSectionResultRowHelper.cs)	(revision d1ae209d3953a6aeba1fc00bb00d0da56f9559fe)
@@ -32,7 +32,7 @@
     /// Helper class for updating states of a <see cref="DataGridViewColumnStateDefinition"/>
     /// in a <see cref="FailureMechanismSectionResultRow{T}"/>.
     /// </summary>
-    public class FailureMechanismSectionResultRowHelper
+    public static class FailureMechanismSectionResultRowHelper
     {
         /// <summary>
         /// Helper method that sets the style of a <paramref name="columnStateDefinition"/> based on a